I want a really fun way to tell my 8yr old daughter and 11yr old son that they are finally getting the sibling they always wanted. They didn't take the loss of the last baby too well.  But since we are further along and doing much better then the last one I need to start thinking of ways to tell them when I'm 12 wks (when I'm in a safe zone even though I'm very confident now just being cautious on their feelings) which is only 6wks from now. They are going to be super excited and it want it to be a fun surprise. Any ideas ladies?